.big{
    height: 720px;
    width: 100%;
    background-color: #87CEEB;
    display: flex;
    justify-content:center;
    align-items:center;
}
.font{
    font-size: 25px;
    color: white;
    font-family: STXingkai;
}
.youxiang{
    float: right;
    margin-top: -10px;
    color: aliceblue;
}
.cancel{
    /* display: flex; */
    margin-top: 2px;
} 

.change{
    display: inline;
    margin-left: 20px;
    
}
.change1{
    display: inline;
    margin-left: 25px;
}